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zloy xaker [14]
2 years ago
12

Hi! I'm on the last question of my homework and I'm stuck on it and was wondering if anyone could help me

Chemistry
1 answer:
Semmy [17]2 years ago
5 0
I am not sure but this is what I think

This question uses the formula connecting mass, density and volume
Which is Density= Mass/Volume

Convert the mass in g
92.5 kg = 92,500g


7.87g/ml = 92,500/ Volume
Volume= 92,500/7.87
= 11,753.5 ml

Now since we have to give the answer in liters we can just divide by 1000 and get
11.75 litres

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Convert 7.1X1025 molecules of water to moles
scoundrel [369]

Answer:

Moles of water in 7.1×10²⁵ molecules are 118 mol.

Explanation:

Given data:

Number of molecules of water = 7.1×10²⁵ molecules

Moles of water in 7.1×10²⁵ molecules = ?

Solution;

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

1 mole = 6.022 × 10²³ molecules of water

7.1×10²⁵ molecules of water × 1 mol / 6.022 × 10²³ molecules of water

1.18×10² moles of water 0r 118 moles of water

5 0
2 years ago
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KIM [24]

Answer:

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2 years ago
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kozerog [31]

Answer:

pH=7

Explanation:

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0.05 mol     0.05 mol

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3 0
3 years ago
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garri49 [273]
Our main source of energy is the sun. True.

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3 years ago
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